Insecticidal Effects of Organotin Compounds on Diamondback Moth Larvae
Author Information
Author(s): Nazni W. Ahmad, Tay Siew Huang, S. Balabaskaran, K.M. Lo, V.G. Kumar Das
Primary Institution: University of Malaya
Hypothesis
Can organotin compounds enhance the effectiveness of insecticides against resistant strains of Plutella xylostella larvae?
Conclusion
Organotin compounds can significantly enhance the toxicity of Bacillus thuringiensis and Malathion against resistant diamondback moth larvae.
Supporting Evidence
- Supplemental synergism was observed with triphenyl- and tricyclopentyltin hydroxides.
- Compounds containing thiocarbamylacetate showed significant inhibition of acetylcholinesterase.
- Synergistic combinations require only sub-lethal doses of both chemical and biotic insecticides.
Takeaway
Some chemicals can help insecticides work better against tough pests, making it easier to control them.
Methodology
The study involved testing 14 organotin compounds for their ability to enhance the toxicity of Bacillus thuringiensis and Malathion on diamondback moth larvae, using in vitro assays and topical applications.
Potential Biases
Potential bias in the selection of compounds and the specific conditions under which tests were conducted.
Limitations
The study primarily focused on a specific strain of diamondback moth and may not be generalizable to all pest strains.
Participant Demographics
Early 4th instar larvae of a highly resistant strain of Plutella xylostella.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
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